QuakeIndex

quarry blast · reviewed by a seismologist

M 2.1ml

5 km SSW of Mill Creek, Oklahoma

· 0.0 km deep · released about 46 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Johnston County 19 kmMurray County 24 kmMarshall County 38 kmCarter County 42 kmPontotoc County 43 kmGarvin County 57 kmLove County 57 kmCoal County 58 kmBryan County 70 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.1 (ml)
Depth
0.0 km below the surface
Felt
no reports yet
Nearest
Johnston County, 19 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1913 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 46 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 330,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 21× the energy of this one
  4. This earthquake M 2.1 about 46 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 34.3617, -96.8557. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Johnston County, OK 19 km (12 mi) WNW of here earthquakes near Johnston County
Murray County, OK 24 km (15 mi) SE of here earthquakes near Murray County
Marshall County, OK 38 km (24 mi) NNW of here earthquakes near Marshall County
Carter County, OK 42 km (26 mi) ENE of here earthquakes near Carter County
Pontotoc County, OK 43 km (27 mi) SSW of here earthquakes near Pontotoc County
Garvin County, OK 57 km (35 mi) SE of here earthquakes near Garvin County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

42 earthquakes have been recorded within 50 km since this one.

  1. 1.8 2 km S of Mill Creek, Oklahoma
  2. 2.1 11 km SE of Katie, Oklahoma
  3. 1.6 8 km W of Davis, Oklahoma
  4. 1.8 3 km SSW of Mill Creek, Oklahoma
  5. 1.8 4 km WSW of Mill Creek, Oklahoma
  6. 1.7 2 km SE of Mill Creek, Oklahoma
  7. 1.6 2 km WSW of Mill Creek, Oklahoma
  8. 1.7 7 km WNW of Davis, Oklahoma
  9. 1.7 3 km WSW of Mill Creek, Oklahoma
  10. 1.6 11 km SSE of Wapanucka, Oklahoma
  11. 2.0 10 km SE of Katie, Oklahoma
  12. 1.6 5 km W of Mill Creek, Oklahoma
  13. 1.7 4 km S of Mill Creek, Oklahoma
  14. 1.7 3 km SW of Mill Creek, Oklahoma
  15. 1.6 8 km N of Mill Creek, Oklahoma

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.